Benjamin Sergeant bsergean

Scan a folder hierarchy for .cpp, .h and .hpp files.

Build a simplisitc #include dependency graph, and compute a transitive score for each .cpp files.

Display a score at the bottom. The lower the better.

This can be used to speedup compilation by making sure the score goes as low as possible.

$ ./includes_smasher.py ~/src/foss/IXWebSocket/ixwebsocket

	# Copy pasted with few changes (see at the bottom) on January the 23th, 2023
	# From https://github.com/iree-org/iree-samples/blob/main/cpp/CMakeLists.txt
	#
	# Copyright 2022 The IREE Authors
	#
	# Licensed under the Apache License v2.0 with LLVM Exceptions.
	# See https://llvm.org/LICENSE.txt for license information.
	# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

	cmake_minimum_required(VERSION 3.21...3.23)

	project(my_exe)

	cmake_minimum_required(VERSION 3.20)

	include(FetchContent)
	FetchContent_Declare(libdeflate
	GIT_REPOSITORY "https://github.com/SpaceIm/libdeflate"
	GIT_TAG "cmakelists" # Or an explicit tag
	GIT_SHALLOW 1)

	cmake_minimum_required(VERSION 3.17)
	project(MyCppTest)

	set(CMAKE_CXX_STANDARD 20)

	include_directories(/tmp/jemalloc/include)

	link_directories(/tmp/jemalloc/lib)
	add_library(jemalloc SHARED IMPORTED)

	cmake_minimum_required(VERSION 3.14)

	include(FetchContent)
	FetchContent_Declare(llhttp
	URL "https://github.com/bsergean/llhttp/releases/download/v6.0.3/llhttp-release-v6.0.3.tar.gz")

	FetchContent_MakeAvailable(llhttp)

	project(llhttp_example_program)

	Type Ctrl-D to exit prompt...
	Connecting to url: wss://demo.websocket.me/v3/channel_1?api_key=oCdCMcMPQpbvNjUIzqtvF1d2X2okWpDQj4AwARJuAgtjhzKxVEjQU6IdCjwm&notify_self
	[6nssl_tls.c:5793: \|2\| 0x7fbaae808258: => handshake
	ssl_cli.c:4416: \|2\| 0x7fbaae808258: client state: 0
	ssl_msg.c:2215: \|2\| 0x7fbaae808258: => flush output
	ssl_msg.c:2227: \|2\| 0x7fbaae808258: <= flush output
	ssl_cli.c:4416: \|2\| 0x7fbaae808258: client state: 1
	ssl_msg.c:2215: \|2\| 0x7fbaae808258: => flush output
	ssl_msg.c:2227: \|2\| 0x7fbaae808258: <= flush output

	//
	// Adapted from https://github.com/Elzair/libuv-examples/blob/master/dns/dns.c
	// to also loop through all results.
	//
	#include <stdio.h>
	#include <stdlib.h>
	#include <uv.h>

	#include <string>

	/*
	*
	# each * represents a count of 40. total 5823
	zlib [ 2775] *********************************************************************
	zlib-ng [ 1808] *********************************************
	libdeflate [ 1240] *******************************
	*

	$ clang++ -DHAVE_LIBDEFLATE=1 -O3 --std=c++14 --stdlib=libc++ gzip.cpp /usr/local/lib/libdeflate.a && ./a.out ~/Desktop/example_data.bin
	median runtime to compress file: 1240